Publication detail
Investigation of Flow in a Model of Human Airways using Constant Temperature Anemometry and Numerical Simulation
LÍZAL, F. ELCNER, J. JEDELSKÝ, J. JÍCHA, M.
Czech title
Výzkum proudění v modelu lidských dýchacích cest s využitím termoanemometrie a numerické simulace
English title
Investigation of Flow in a Model of Human Airways using Constant Temperature Anemometry and Numerical Simulation
Type
conference paper
Language
en
Original abstract
Mechanics of flow in human lungs has major influence on a transport and deposition of inhaled particles. A semi-realistic model of human tracheobronchial airways was used for experimental measurement and numerical simulation of an air velocity field. Axial velocities in 14 points in a trachea were measured using Constant Temperature Anemometry and compared with numerical simulation. The influence of a computational mesh quality was investigated as well. The experimental and simulated results proved significant differences between the methods. Probable causes of the discrepancies are a size of the anemometric probe, accuracy of the numerical method and its sensitivity to mesh quality and boundary conditions.
Czech abstract
Mechanika proudění v lidských plicích má významný vliv na transport a ukládání inhalovaných částic. Semi-realistický model lidských tracheobronchiálních dýchacích cest byl použit pro experimentální měření a numerické simulace průtoku vzduchu. Axiální rychlosti byly měřeny ve 14 bodech v průdušnici pomocí termoanemometrie a byly porovnány s numerickou simulací. Byl zkoumán také vliv kvality výpočetní sítě. Mezi experimentálními a numerickými výsledky byly nalezeny významné rozdíly. Pravděpodobnou příčinou rozporů jsou velikost anemometrické sondy, přesnost numerické metody a její citlivosti na kvalitu sítě a okrajové podmínky.
English abstract
Mechanics of flow in human lungs has major influence on a transport and deposition of inhaled particles. A semi-realistic model of human tracheobronchial airways was used for experimental measurement and numerical simulation of an air velocity field. Axial velocities in 14 points in a trachea were measured using Constant Temperature Anemometry and compared with numerical simulation. The influence of a computational mesh quality was investigated as well. The experimental and simulated results proved significant differences between the methods. Probable causes of the discrepancies are a size of the anemometric probe, accuracy of the numerical method and its sensitivity to mesh quality and boundary conditions.
Keywords in Czech
žárová anemometrie, termoanemometrie, CFD, numerická simulace, měření průtoku
Keywords in English
constant temperature anemometry, numerical simulation, CFD, human airways, flow measurement
RIV year
2013
Released
14.05.2013
Publisher
WSEAS Press
Location
Vouliagmeni, Athens, Greece
ISBN
978-1-61804-183-8
Book
Recent Advances in Fluid Mechanics and Heat & Mass Transfer
Pages from–to
35–40
Pages count
6
BIBTEX
@inproceedings{BUT104062,
author="František {Lízal} and Jakub {Elcner} and Jan {Jedelský} and Miroslav {Jícha},
title="Investigation of Flow in a Model of Human Airways using Constant Temperature Anemometry and Numerical Simulation",
booktitle="Recent Advances in Fluid Mechanics and Heat & Mass Transfer",
year="2013",
month="May",
pages="35--40",
publisher="WSEAS Press",
address="Vouliagmeni, Athens, Greece",
isbn="978-1-61804-183-8"
}